The definition of Web 2.0 differs depending on whom you ask. Most would agree that it refers to user-generated content, like what is found on MySpace or YouTube, but it also should be considered as a feature that encourages user participation and the sharing of knowledge. If Netscape is Web 1.0, then Google is Web 2.0. If Britannica Online is Web 1.0, then Wikipedia is Web 2.0.

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